[Bug tree-optimization/34176] [4.3 Regression] SCCVN breaks gettext

["rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #19 from rguenth at gcc dot gnu dot org  2007-11-23 14:29 -------
Subject: Bug 34176

Author: rguenth
Date: Fri Nov 23 14:28:59 2007
New Revision: 130379

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130379
Log:
2007-11-23  Richard Guenther  <rguenther@suse.de>
        Michael Matz  <matz@suse.de>

        PR tree-optimization/34176
        * alloc-pool.h (empty_alloc_pool): Declare.
        * alloc-pool.c (empty_alloc_pool): New function.
        * tree-ssa-sccvn.c (vn_reference_lookup): Also lookup from the
        valid table if a lookup from the optimistic table failed.
        (vn_unary_op_lookup): Likewise.
        (vn_binary_op_lookup): Likewise.
        (vn_phi_lookup): Likewise.
        (process_scc): Clear optimistic tables before every iteration.

        * gcc.c-torture/execute/pr34176.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr34176.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/alloc-pool.c
    trunk/gcc/alloc-pool.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-sccvn.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34176